./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 22:27:25,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 22:27:25,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-10 22:27:25,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 22:27:25,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 22:27:25,843 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 22:27:25,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 22:27:25,845 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 22:27:25,846 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 22:27:25,847 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 22:27:25,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 22:27:25,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 22:27:25,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 22:27:25,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 22:27:25,849 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 22:27:25,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 22:27:25,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 22:27:25,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 22:27:25,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 22:27:25,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 22:27:25,853 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 22:27:25,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 22:27:25,854 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 22:27:25,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 22:27:25,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 22:27:25,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 22:27:25,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 22:27:25,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 22:27:25,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:25,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 22:27:25,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 22:27:25,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 22:27:25,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 22:27:25,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 22:27:25,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 22:27:25,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 22:27:25,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 22:27:25,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 22:27:25,858 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-11-10 22:27:26,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 22:27:26,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 22:27:26,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 22:27:26,094 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 22:27:26,095 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 22:27:26,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-11-10 22:27:27,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 22:27:27,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 22:27:27,580 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-11-10 22:27:27,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8fd96f0/0e9aa2ce03bd44519589ac07ddc708fe/FLAGab7d3942d [2024-11-10 22:27:27,597 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba8fd96f0/0e9aa2ce03bd44519589ac07ddc708fe [2024-11-10 22:27:27,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 22:27:27,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 22:27:27,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:27,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 22:27:27,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 22:27:27,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac83bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27, skipping insertion in model container [2024-11-10 22:27:27,608 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 22:27:27,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:27,813 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 22:27:27,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 22:27:27,855 INFO L204 MainTranslator]: Completed translation [2024-11-10 22:27:27,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27 WrapperNode [2024-11-10 22:27:27,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 22:27:27,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:27,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 22:27:27,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 22:27:27,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,876 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,902 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 273 [2024-11-10 22:27:27,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 22:27:27,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 22:27:27,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 22:27:27,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 22:27:27,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,926 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 22:27:27,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,927 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,932 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,935 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 22:27:27,938 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 22:27:27,938 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 22:27:27,938 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 22:27:27,938 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (1/1) ... [2024-11-10 22:27:27,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 22:27:27,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:27,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 22:27:27,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 22:27:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 22:27:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 22:27:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 22:27:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 22:27:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 22:27:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 22:27:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 22:27:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 22:27:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 22:27:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 22:27:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 22:27:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 22:27:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 22:27:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 22:27:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 22:27:27,999 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 22:27:28,100 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 22:27:28,102 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 22:27:28,416 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 22:27:28,416 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 22:27:28,799 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 22:27:28,799 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 22:27:28,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:28 BoogieIcfgContainer [2024-11-10 22:27:28,800 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 22:27:28,801 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 22:27:28,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 22:27:28,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 22:27:28,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:27:27" (1/3) ... [2024-11-10 22:27:28,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f526f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:28, skipping insertion in model container [2024-11-10 22:27:28,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:27:27" (2/3) ... [2024-11-10 22:27:28,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f526f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:27:28, skipping insertion in model container [2024-11-10 22:27:28,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:27:28" (3/3) ... [2024-11-10 22:27:28,807 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-11-10 22:27:28,822 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 22:27:28,823 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-10 22:27:28,823 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 22:27:28,886 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 22:27:28,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 91 transitions, 210 flow [2024-11-10 22:27:28,958 INFO L124 PetriNetUnfolderBase]: 11/87 cut-off events. [2024-11-10 22:27:28,961 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 22:27:28,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 87 events. 11/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 266 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2024-11-10 22:27:28,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 91 transitions, 210 flow [2024-11-10 22:27:28,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 85 transitions, 191 flow [2024-11-10 22:27:28,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 22:27:28,982 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46b3538c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 22:27:28,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-11-10 22:27:28,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 22:27:28,985 INFO L124 PetriNetUnfolderBase]: 2/8 cut-off events. [2024-11-10 22:27:28,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 22:27:28,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:28,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 22:27:28,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:28,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:28,991 INFO L85 PathProgramCache]: Analyzing trace with hash 23255477, now seen corresponding path program 1 times [2024-11-10 22:27:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:28,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407380878] [2024-11-10 22:27:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407380878] [2024-11-10 22:27:29,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407380878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:29,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:29,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167008683] [2024-11-10 22:27:29,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:29,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:29,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-11-10 22:27:29,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:29,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:29,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-11-10 22:27:29,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:32,523 INFO L124 PetriNetUnfolderBase]: 34048/46200 cut-off events. [2024-11-10 22:27:32,523 INFO L125 PetriNetUnfolderBase]: For 2386/2386 co-relation queries the response was YES. [2024-11-10 22:27:32,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93396 conditions, 46200 events. 34048/46200 cut-off events. For 2386/2386 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 312036 event pairs, 30634 based on Foata normal form. 3415/34330 useless extension candidates. Maximal degree in co-relation 87989. Up to 44715 conditions per place. [2024-11-10 22:27:32,836 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 54 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-11-10 22:27:32,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 307 flow [2024-11-10 22:27:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-11-10 22:27:32,847 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-11-10 22:27:32,848 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 191 flow. Second operand 4 states and 176 transitions. [2024-11-10 22:27:32,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 307 flow [2024-11-10 22:27:33,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 294 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-10 22:27:33,134 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 220 flow [2024-11-10 22:27:33,135 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2024-11-10 22:27:33,138 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -5 predicate places. [2024-11-10 22:27:33,138 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 220 flow [2024-11-10 22:27:33,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:33,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:33,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 22:27:33,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 22:27:33,139 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:33,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:33,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2105170894, now seen corresponding path program 1 times [2024-11-10 22:27:33,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:33,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089212148] [2024-11-10 22:27:33,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:33,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:33,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:33,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089212148] [2024-11-10 22:27:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089212148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092839701] [2024-11-10 22:27:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:33,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:33,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:33,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:33,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 22:27:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:33,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:33,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:33,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092839701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:33,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:33,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-10 22:27:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009044374] [2024-11-10 22:27:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:33,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 22:27:33,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 22:27:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-10 22:27:33,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-11-10 22:27:33,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:33,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:33,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-11-10 22:27:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:36,260 INFO L124 PetriNetUnfolderBase]: 34048/46198 cut-off events. [2024-11-10 22:27:36,261 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-11-10 22:27:36,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92679 conditions, 46198 events. 34048/46198 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 311933 event pairs, 30634 based on Foata normal form. 2/30915 useless extension candidates. Maximal degree in co-relation 92625. Up to 44705 conditions per place. [2024-11-10 22:27:36,528 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 47 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-11-10 22:27:36,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 330 flow [2024-11-10 22:27:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 22:27:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 22:27:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-11-10 22:27:36,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38644688644688646 [2024-11-10 22:27:36,537 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 220 flow. Second operand 6 states and 211 transitions. [2024-11-10 22:27:36,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 330 flow [2024-11-10 22:27:36,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 22:27:36,539 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 236 flow [2024-11-10 22:27:36,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2024-11-10 22:27:36,541 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, -2 predicate places. [2024-11-10 22:27:36,541 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 236 flow [2024-11-10 22:27:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:36,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:36,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1] [2024-11-10 22:27:36,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 22:27:36,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:36,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:36,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 835788929, now seen corresponding path program 1 times [2024-11-10 22:27:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292665613] [2024-11-10 22:27:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:36,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292665613] [2024-11-10 22:27:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292665613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231610390] [2024-11-10 22:27:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:36,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:36,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 22:27:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:36,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 22:27:36,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:36,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:27:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231610390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:27:37,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:27:37,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-10 22:27:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870302067] [2024-11-10 22:27:37,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:27:37,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 22:27:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:37,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 22:27:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-10 22:27:37,049 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-11-10 22:27:37,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 236 flow. Second operand has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:37,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:37,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-11-10 22:27:37,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:39,736 INFO L124 PetriNetUnfolderBase]: 34054/46234 cut-off events. [2024-11-10 22:27:39,736 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2024-11-10 22:27:39,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92785 conditions, 46234 events. 34054/46234 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 312443 event pairs, 30634 based on Foata normal form. 6/30957 useless extension candidates. Maximal degree in co-relation 92627. Up to 44716 conditions per place. [2024-11-10 22:27:39,955 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 52 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-11-10 22:27:39,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 504 flow [2024-11-10 22:27:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 22:27:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 22:27:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2024-11-10 22:27:39,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3659340659340659 [2024-11-10 22:27:39,957 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 236 flow. Second operand 10 states and 333 transitions. [2024-11-10 22:27:39,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 504 flow [2024-11-10 22:27:39,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 446 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 22:27:39,959 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 376 flow [2024-11-10 22:27:39,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=376, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-11-10 22:27:39,960 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2024-11-10 22:27:39,960 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 376 flow [2024-11-10 22:27:39,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.083333333333332) internal successors, (313), 12 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:39,961 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:39,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:39,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 22:27:40,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-10 22:27:40,162 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:40,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1215684751, now seen corresponding path program 1 times [2024-11-10 22:27:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065421879] [2024-11-10 22:27:40,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:40,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:40,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065421879] [2024-11-10 22:27:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065421879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:40,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553385257] [2024-11-10 22:27:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:40,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:40,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:40,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:40,242 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 91 [2024-11-10 22:27:40,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:40,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:40,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 91 [2024-11-10 22:27:40,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:43,446 INFO L124 PetriNetUnfolderBase]: 39410/53975 cut-off events. [2024-11-10 22:27:43,446 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-11-10 22:27:43,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108262 conditions, 53975 events. 39410/53975 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 2618. Compared 371985 event pairs, 35768 based on Foata normal form. 906/38455 useless extension candidates. Maximal degree in co-relation 108157. Up to 44740 conditions per place. [2024-11-10 22:27:43,690 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 120 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2024-11-10 22:27:43,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 146 transitions, 803 flow [2024-11-10 22:27:43,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 22:27:43,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 22:27:43,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-10 22:27:43,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-11-10 22:27:43,691 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 376 flow. Second operand 5 states and 234 transitions. [2024-11-10 22:27:43,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 146 transitions, 803 flow [2024-11-10 22:27:43,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 146 transitions, 769 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:43,695 INFO L231 Difference]: Finished difference. Result has 97 places, 101 transitions, 398 flow [2024-11-10 22:27:43,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=97, PETRI_TRANSITIONS=101} [2024-11-10 22:27:43,695 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2024-11-10 22:27:43,696 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 101 transitions, 398 flow [2024-11-10 22:27:43,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:43,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:43,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:43,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 22:27:43,696 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:43,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1560945735, now seen corresponding path program 1 times [2024-11-10 22:27:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:43,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659707785] [2024-11-10 22:27:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:43,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659707785] [2024-11-10 22:27:43,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659707785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:43,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:43,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103379323] [2024-11-10 22:27:43,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:43,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:43,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:43,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:43,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:43,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-11-10 22:27:43,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 101 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:43,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:43,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-11-10 22:27:43,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:46,358 INFO L124 PetriNetUnfolderBase]: 32325/45607 cut-off events. [2024-11-10 22:27:46,359 INFO L125 PetriNetUnfolderBase]: For 2515/2515 co-relation queries the response was YES. [2024-11-10 22:27:46,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94453 conditions, 45607 events. 32325/45607 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 2235. Compared 324360 event pairs, 29285 based on Foata normal form. 0/32629 useless extension candidates. Maximal degree in co-relation 94350. Up to 42877 conditions per place. [2024-11-10 22:27:46,704 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 70 selfloop transitions, 6 changer transitions 0/100 dead transitions. [2024-11-10 22:27:46,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 548 flow [2024-11-10 22:27:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-11-10 22:27:46,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-11-10 22:27:46,705 INFO L175 Difference]: Start difference. First operand has 97 places, 101 transitions, 398 flow. Second operand 3 states and 138 transitions. [2024-11-10 22:27:46,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 548 flow [2024-11-10 22:27:46,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:46,708 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 406 flow [2024-11-10 22:27:46,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2024-11-10 22:27:46,709 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2024-11-10 22:27:46,709 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 406 flow [2024-11-10 22:27:46,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:46,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:46,710 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:46,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 22:27:46,710 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:46,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1560945734, now seen corresponding path program 1 times [2024-11-10 22:27:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599983805] [2024-11-10 22:27:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:46,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:46,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:46,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599983805] [2024-11-10 22:27:46,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599983805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:46,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:46,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:46,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523480708] [2024-11-10 22:27:46,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:46,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:46,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:46,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:46,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-11-10 22:27:46,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:46,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:46,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-11-10 22:27:46,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:49,046 INFO L124 PetriNetUnfolderBase]: 25240/35943 cut-off events. [2024-11-10 22:27:49,047 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-11-10 22:27:49,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74876 conditions, 35943 events. 25240/35943 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 1750. Compared 250857 event pairs, 22802 based on Foata normal form. 0/27211 useless extension candidates. Maximal degree in co-relation 74771. Up to 33729 conditions per place. [2024-11-10 22:27:49,237 INFO L140 encePairwiseOnDemand]: 89/91 looper letters, 73 selfloop transitions, 1 changer transitions 1/99 dead transitions. [2024-11-10 22:27:49,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 99 transitions, 554 flow [2024-11-10 22:27:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-10 22:27:49,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5018315018315018 [2024-11-10 22:27:49,239 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 406 flow. Second operand 3 states and 137 transitions. [2024-11-10 22:27:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 99 transitions, 554 flow [2024-11-10 22:27:49,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:49,242 INFO L231 Difference]: Finished difference. Result has 97 places, 98 transitions, 397 flow [2024-11-10 22:27:49,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=397, PETRI_PLACES=97, PETRI_TRANSITIONS=98} [2024-11-10 22:27:49,243 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2024-11-10 22:27:49,243 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 98 transitions, 397 flow [2024-11-10 22:27:49,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:49,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:49,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:49,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 22:27:49,243 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:49,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:49,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1042803362, now seen corresponding path program 1 times [2024-11-10 22:27:49,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228397470] [2024-11-10 22:27:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:49,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228397470] [2024-11-10 22:27:49,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228397470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:49,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:49,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 22:27:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001534329] [2024-11-10 22:27:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:49,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:49,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:49,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-11-10 22:27:49,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 98 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:49,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:49,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-11-10 22:27:49,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:51,686 INFO L124 PetriNetUnfolderBase]: 26219/37547 cut-off events. [2024-11-10 22:27:51,686 INFO L125 PetriNetUnfolderBase]: For 2426/2426 co-relation queries the response was YES. [2024-11-10 22:27:51,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78868 conditions, 37547 events. 26219/37547 cut-off events. For 2426/2426 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 258162 event pairs, 10140 based on Foata normal form. 305/28963 useless extension candidates. Maximal degree in co-relation 78851. Up to 24743 conditions per place. [2024-11-10 22:27:51,912 INFO L140 encePairwiseOnDemand]: 87/91 looper letters, 96 selfloop transitions, 2 changer transitions 2/124 dead transitions. [2024-11-10 22:27:51,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 124 transitions, 662 flow [2024-11-10 22:27:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-10 22:27:51,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5970695970695971 [2024-11-10 22:27:51,913 INFO L175 Difference]: Start difference. First operand has 97 places, 98 transitions, 397 flow. Second operand 3 states and 163 transitions. [2024-11-10 22:27:51,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 124 transitions, 662 flow [2024-11-10 22:27:51,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 124 transitions, 661 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:51,917 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 400 flow [2024-11-10 22:27:51,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-10 22:27:51,918 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 11 predicate places. [2024-11-10 22:27:51,918 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 400 flow [2024-11-10 22:27:51,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:51,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:51,918 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:51,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 22:27:51,919 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:51,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:51,919 INFO L85 PathProgramCache]: Analyzing trace with hash -268659126, now seen corresponding path program 1 times [2024-11-10 22:27:51,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:51,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934957366] [2024-11-10 22:27:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:51,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:27:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934957366] [2024-11-10 22:27:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934957366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:27:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677637546] [2024-11-10 22:27:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:52,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:27:52,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:27:52,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 22:27:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:52,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 22:27:52,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:27:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:52,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 22:27:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677637546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:52,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 22:27:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-10 22:27:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784320704] [2024-11-10 22:27:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:52,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:52,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 22:27:52,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-11-10 22:27:52,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:52,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:52,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-11-10 22:27:52,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:54,107 INFO L124 PetriNetUnfolderBase]: 20782/29664 cut-off events. [2024-11-10 22:27:54,108 INFO L125 PetriNetUnfolderBase]: For 3089/3420 co-relation queries the response was YES. [2024-11-10 22:27:54,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63074 conditions, 29664 events. 20782/29664 cut-off events. For 3089/3420 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 196405 event pairs, 18769 based on Foata normal form. 0/24465 useless extension candidates. Maximal degree in co-relation 63055. Up to 27913 conditions per place. [2024-11-10 22:27:54,254 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 71 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2024-11-10 22:27:54,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 536 flow [2024-11-10 22:27:54,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:54,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-10 22:27:54,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-11-10 22:27:54,255 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 400 flow. Second operand 3 states and 135 transitions. [2024-11-10 22:27:54,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 536 flow [2024-11-10 22:27:54,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:54,258 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 392 flow [2024-11-10 22:27:54,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2024-11-10 22:27:54,259 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 10 predicate places. [2024-11-10 22:27:54,259 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 392 flow [2024-11-10 22:27:54,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:54,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:54,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:54,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 22:27:54,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:27:54,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:54,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash -483357139, now seen corresponding path program 1 times [2024-11-10 22:27:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950935116] [2024-11-10 22:27:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:54,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:54,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:54,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950935116] [2024-11-10 22:27:54,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950935116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:54,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:54,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 22:27:54,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38155637] [2024-11-10 22:27:54,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:54,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 22:27:54,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:54,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 22:27:54,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 22:27:54,517 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-11-10 22:27:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-11-10 22:27:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:57,362 INFO L124 PetriNetUnfolderBase]: 31816/46739 cut-off events. [2024-11-10 22:27:57,362 INFO L125 PetriNetUnfolderBase]: For 4021/4223 co-relation queries the response was YES. [2024-11-10 22:27:57,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96279 conditions, 46739 events. 31816/46739 cut-off events. For 4021/4223 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 339746 event pairs, 12957 based on Foata normal form. 1018/37848 useless extension candidates. Maximal degree in co-relation 96259. Up to 20918 conditions per place. [2024-11-10 22:27:57,621 INFO L140 encePairwiseOnDemand]: 86/91 looper letters, 134 selfloop transitions, 4 changer transitions 0/158 dead transitions. [2024-11-10 22:27:57,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 158 transitions, 820 flow [2024-11-10 22:27:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 22:27:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 22:27:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-11-10 22:27:57,622 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5796703296703297 [2024-11-10 22:27:57,622 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 392 flow. Second operand 4 states and 211 transitions. [2024-11-10 22:27:57,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 158 transitions, 820 flow [2024-11-10 22:27:57,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 158 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 22:27:57,626 INFO L231 Difference]: Finished difference. Result has 99 places, 96 transitions, 404 flow [2024-11-10 22:27:57,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=404, PETRI_PLACES=99, PETRI_TRANSITIONS=96} [2024-11-10 22:27:57,626 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 12 predicate places. [2024-11-10 22:27:57,626 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 96 transitions, 404 flow [2024-11-10 22:27:57,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:57,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:57,627 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 22:27:57,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 22:27:57,627 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:57,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash -895090756, now seen corresponding path program 1 times [2024-11-10 22:27:57,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:57,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600819321] [2024-11-10 22:27:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:27:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 22:27:57,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:27:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600819321] [2024-11-10 22:27:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600819321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 22:27:57,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 22:27:57,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 22:27:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67601639] [2024-11-10 22:27:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 22:27:57,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 22:27:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:27:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 22:27:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 22:27:57,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 91 [2024-11-10 22:27:57,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 96 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:57,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:27:57,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 91 [2024-11-10 22:27:57,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:27:59,696 INFO L124 PetriNetUnfolderBase]: 20539/29345 cut-off events. [2024-11-10 22:27:59,697 INFO L125 PetriNetUnfolderBase]: For 7520/8662 co-relation queries the response was YES. [2024-11-10 22:27:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68600 conditions, 29345 events. 20539/29345 cut-off events. For 7520/8662 co-relation queries the response was YES. Maximal size of possible extension queue 1010. Compared 186195 event pairs, 8556 based on Foata normal form. 1259/26549 useless extension candidates. Maximal degree in co-relation 68579. Up to 22942 conditions per place. [2024-11-10 22:27:59,899 INFO L140 encePairwiseOnDemand]: 88/91 looper letters, 88 selfloop transitions, 2 changer transitions 4/117 dead transitions. [2024-11-10 22:27:59,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 117 transitions, 647 flow [2024-11-10 22:27:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 22:27:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 22:27:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-11-10 22:27:59,900 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-10 22:27:59,900 INFO L175 Difference]: Start difference. First operand has 99 places, 96 transitions, 404 flow. Second operand 3 states and 154 transitions. [2024-11-10 22:27:59,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 117 transitions, 647 flow [2024-11-10 22:27:59,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 117 transitions, 641 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 22:27:59,929 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 413 flow [2024-11-10 22:27:59,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-10 22:27:59,930 INFO L277 CegarLoopForPetriNet]: 87 programPoint places, 13 predicate places. [2024-11-10 22:27:59,931 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 413 flow [2024-11-10 22:27:59,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:27:59,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 22:27:59,933 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1] [2024-11-10 22:27:59,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 22:27:59,933 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2024-11-10 22:27:59,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 22:27:59,933 INFO L85 PathProgramCache]: Analyzing trace with hash -780190058, now seen corresponding path program 2 times [2024-11-10 22:27:59,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 22:27:59,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932335494] [2024-11-10 22:27:59,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 22:27:59,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 22:27:59,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 22:28:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 22:28:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 22:28:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932335494] [2024-11-10 22:28:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932335494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 22:28:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012352230] [2024-11-10 22:28:00,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 22:28:00,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 22:28:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 22:28:00,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 22:28:00,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 22:28:00,126 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 22:28:00,126 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 22:28:00,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 22:28:00,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 22:28:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:00,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 22:28:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-10 22:28:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012352230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 22:28:00,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 22:28:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-11-10 22:28:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6289057] [2024-11-10 22:28:00,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 22:28:00,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 22:28:00,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 22:28:00,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 22:28:00,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-10 22:28:00,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 91 [2024-11-10 22:28:00,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 97 transitions, 413 flow. Second operand has 14 states, 14 states have (on average 24.142857142857142) internal successors, (338), 14 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 22:28:00,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 22:28:00,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 91 [2024-11-10 22:28:00,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 22:28:02,362 INFO L124 PetriNetUnfolderBase]: 20542/29158 cut-off events. [2024-11-10 22:28:02,363 INFO L125 PetriNetUnfolderBase]: For 10017/11212 co-relation queries the response was YES. [2024-11-10 22:28:02,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66964 conditions, 29158 events. 20542/29158 cut-off events. For 10017/11212 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 183977 event pairs, 17392 based on Foata normal form. 1064/25747 useless extension candidates. Maximal degree in co-relation 66941. Up to 27247 conditions per place.